Device for shape-turning and for the production of hollow shapes and turned parts bymeans of a rotating cutting tool on machine tools



Dec. 8, 1953 A. RUEGG ,640

DEVICE FOR SHAPE-TURNING AND FOR THE PRODUCTION OF HOLLOW SHAPES AND TURNED PARTS BY MEANS OF A ROTATING CUTTING TOOL ON MACHINE TOOLS Filed June 15, 1951 Patented Dec. 8, 1953 DEVICE FOR SHAPE-TURNING AND FORTHE. PRODUCTION OF HOLLOW SHAPES AND TURNED PARTS BY MEANS OF A ROTAT- CUTTING TOOL ON MACHINE TOOLS.

Arnold Riiegg, Gumligen, near Bern, Switzerland, assignor, to ARMAG Spezialwerkzeugeund; Maschinen A, (3., Gumligen, Switzerland Application June 15, 1951, Serial No. 231,842

Glaimspriority, application Switzerland; Septem 22, 195.0

10' Claims.

Devices for shape-turning by means of. rotath1g7 tools'lare known. In these the tool is guided bya template arranged above the work: piece. Such cutting tools'must have a, definite profile andicannot taketthe. form of a unilaterally cut tifi gfcutterl 6 'Iiielc'abject of the, present invention is. a device for snapeaumm anat e manufacture of hollow hines. and turnedfparts by means of a. rotatmg cutting tool on machine tools, said device having a l'1: e .--Withv an internal hollow space, said head being arranged-on aftapered carrier spindle inserted-inthe and 05a. rotating arbor, a tool carrier with its; cutting tool adapted to be. displaced in; relation l to the rotational axis being arranged saidhollow space said tool-carrier being p.13 4 led at one endwith ashapedpart tapered onthel outsideengaging in an aperture of a displaeeableguiding template guided in said head by; whichltemplate, the displacement. of said tool carrier-with its cutting tool, is, efiected, said guiding'. template. beingdisplaceably and. adjustably held stationary inv an adjustable; ring of an annular carrier provided with a .handleand rotatably guided in. said head,. whilst'the tool carrier revolves within. saidl guiding. template so that the amount of. displacementiof said-tool carrier with its cutting tool in said head and thusathe-dimem.

sionsot the shape to be produced according to said aperture in. said. guiding template can be altered axial, displacement. oi? said. guiding tempnteirithefhead- 'In the drawings accompanying and forming part,of thisspecification two, embodiments of the present inyention, are illustrated by. way of ex-. iuzle.invvhich v Rig. "1 ajrsteinbodimentinrlon i n l c Fig, 21 a section along, lln I'- fu Eig. 3:a second embodiment inlongitudinalsece For {connectio with; a-idrivi i' arb r e de i e tool; carrier Sfcapabl'e of being displaced atn'ight edges as the. rotational; axis ..o.f:. he device 1311 sated!) The tool a i r ce ia f it "s. displacflably. u r o al (dia am maticallyl howm. Ora-t R walllsirlnatheisides ofit e hcll wssnace 2 i la m tol ale-levied; il t w rds... oppos Sid hithe 'cptting,d..-ec.t .bnbi thecuttingi fll 113 the'toofcarrier 'S'by means r a c l/159 1 1 disposed in a bore of; the prismatic part 6. At the bottom of said prismatic par-t the carrier. head II and above this atap-ered guiding part l2 are. connected with said prismatic part by means of an. intermediate piece, said,- parts projecting outof the head 2 through an opening H1 in the plate 4. Externally embracing the. head I there is rotatably arranged thereon an annular carrier or member l4 provided with a handle [5, said carrier It being guidedat its upper end. on the head 2 by means of/the balls it. At the lower end of the carrier It. a ring. I! is pivotally connected therewith, said ring being providedwith an in-.- ternal thread It withwhichthread the outside edge of the guiding. template l9 meshes. Saidi guiding template has. anqaperture 2Dscorresponding, in outline to thehhollow shape of the work piece to be producedandlhaving its edg beveled in accordancev with the taper of the guiding part [2 of the carrier head I I projecting out ofnthehead, 2 through said vaperturezlll Ifthe guiding...

template I9 is. displaced. more tothetopby rotation of the ring I'T, the displaceability of. the tapered guiding part l.2' in. the template aperture- 2|ljis reduced and thusthe outside dimensionsof outerannular carrierM is heldjby the handle: !5'

and. prevented from. rotating. Thus. the guiding. template [9 is. stationary, andlthetaperedfguid ing part l2 of the. tool. carrier rotates in the aperture ofv said template andgives-the cutting.

tool lflja corresponding. rotary motion which is in.

accordance to the. shape ofthe aperture 20 due to the action ofJthecoillspringS.

According to the second embodiment shownin Figs. 3 and 4 thehead 22 varrangedonth'ecarrier, spindle 2i hasa slot. 23..open to-one sideand atthe endopposite to saidispindleZl a transverse.

hole. 24

In the latter the. pin .25 With'l the tool carrierzfit is mounted for pivoting .aboutsaidpin. 251' The tool carrier 26 .is adapted as atwo-armedllever...

theghead 21 of which;capable;,=ofbeing, displaced insaidjslot 23 isadapted assa' tracer finger which. is forced outwardly against acam-shapedannular. template 29. by, a, coil. spring .28. At the end" oppositeto the tracer finger. thatoolv carrierhasan-aperture .311 in which the. .cuttingtool 3.|.-is1se-- cured. Arranged for rotation about theraxisrofl .theheadn. thebelleshapedring aa amne hantion thereabout and is braced against the head 22 by means of a tapered closure ring 31. In the ring the annular template 29 is inserted, said annular template being provided on the inside with a contour conforming to the shaped object to be produced, the head 22 of the tracer finger bearing against the inside surface of the annular template 29 under the action of the spring 28. By axial displacement of the annular template 29 the size of the shape to be machined by the cutting tool can be altered.

For machining the head 22 is inserted in the bore of the arbor of a machine tool by means of the carrier spindle 2| and is set in rotation. The outer ring 33 is held by the handle 34 and pre vented from rotating. Thereby the head 21 of i the tracer finger slides along the inner surface of the annular template 29 and displaces the cutting tool 3| against the action of the spring 28 and against the centrifugal force acting on the tool carrier according to the annular template,

What I claim and wish to secure by Letters Patent is:

l. A device for shaping articles comprising a carrier spindle for attachment to rotary means, a head connected to said spindle and provided with a hollow space, a carrier for a tool supported in said head within said space thereof for displacement in relation to the rotational axis of said spindle, a guiding part for said tool carrier,

an annular member seated on said head, a handle portion holding said annular member stationary while said carrier spindle rotates about said axis, and an adjusting ring internally threaded and attached to said annular member, said ring being adapted to threadedly and interchangeably receive an apertured template, whereby said template when inserted and threadedly displaced in said ring controls the movement of said guiding part of said tool carrier to thereby alter dimensions of the shape of an article to be worked upon according to the contour of the aperture of said template.

2.. A device for shaping articles comprising a carrier spindle for attachment to rotary means, a head connected to said spindle and provided with a hollow space, plate means closing the opening of the hollow space and including a centrally slotted opening, a carrier for a tool, means for supporting said carrier in said head within said hollow space, said means including roller bearing means allowing lateral displacement of the tool carrier while preventing longi-' tudinal displacement thereof, resilient means mounted between said head and said tool carrier, a guiding part on said tool carrier, an annular member seated on said head, a handle portion holding said annular member stationary while said carrier spindle rotates about said axis, and an adjusting ring internally threaded and attached to said annular member, said ring being adapted to threadedly and interchangeably receive an apertured template, whereby said template when inserted and threadedly displaced in said ring controls the movement of said guiding part of said tool carrier to thereby alter dimensions of the shape of an article to be worked upon according to the contour of the aperture of said template. a. Y a

3.'A device for shaping articles comprising a 4 carrier spindle for attachment to rotary means, a head connected to said spindle and provided with a hollow space, a carrier for atool adapted to receive said tool at one end thereof, means for supporting said tool carrier in said head within said hollow space, said means including a pin providing a pivotal mounting for said carrier,

resilient means mounted between said head and said tool carrier, a guiding part at the other end of said tool carrier, and an annular member seated on said head, a handle portion holding said annular member stationary while said carrier spindle rotates'about said axis, and an adjusting ring internally threaded and attached to said annular member, said ring being adapted to threadedly and interchangeably receive an apertured template, whereby said template when inserted and threadedly displaced in said ring controls the movement of said guiding part of said tool carrier to thereby alter dimensions of the shape of an article to be worked upon according to the contour of the aperture of said template.

4. A device for shaping articles comprising a carrier spindle for attachment to rotary means, a head connected to said spindle and provided with a hollow space, slot means in said head, a carrier for a tool adapted to receive said tool at one end thereof, means for supporting said tool carrier in said head within said hollow space,

said means including a pinproviding a pivotal mounting for said carrier, resilient means mounted between said head and said tool carrier, a guiding part at the other end of said tool carrier, and an annular member seated on said head, a handle portion holding said annular member stationary while said carrier spindle rotates about said axis, and an adjusting ring internally threaded and attached to said annular member, said ring being adapted to threadedly and interchangeably receive an apertured template, whereby said template when inserted and threadedly displaced in said ring controls the movement of said guiding part of said tool car; rier through said slot means to thereby alter dimensions of the shape of an article to be worked upon according to the contour of the aperture of,

said template. i

5. A device as set forth in claim 4, comprising a tapered annular closure ring fitted to the edge of said adjusting ring for bracing the annular carrier, adjusting ring, and guiding template against lateral displacement,

6. A device for shaping, articles comprising a spindle, a head connected to said spindle and provided with a hollow space, a carrier for a tool, means supporting said tool carrier within said space and including bearing means for saidtool carrier whereby the latter may be displaced laterally to the axis of said spindle within said space, resilient means mounted between said head and said tool carrier, guiding means on'said tool carrier, an annular member seated on said head, means holding said annular member stationary while said spindle rotates about said axis, and an adjusting ring internally threaded and attached to said annular member, said ring being 7 in said ring controls the movement of said guiding means of said tool carrier to thereby alter dimens1ons of the shape .of-an article to be worked upon according to the contour of the aperture.

of said template.

accuses 7. A device for shaping articles comprising a spindle, a head connected to said spindle and provided with a hollow space, a carrier for a tool, means supporting said tool carrier and said head within said space and including bearing means for said tool carrier whereby the latter is held against displacement longitudinally to the axis of said spindle and for displacement with said head, means for allowing displacement of said tool carrier laterally to the axis of said spindle, resilient means mounted between said head and said tool carrier, a prismatically shaped guiding means at the end of the tool carrier on which the tool is mounted, an annular member seated on said head, means holding said annular member stationary While said carrier spindle rotates about said axis, and an adjusting ring internally threaded and attached to said annular member, said ring being adapted to threadedly and interchangeably receive an apertured template, whereby said template when inserted and threadedly displaced in said ring controls the movement of said guiding means of said tool carrier to thereby alter dimensions of the shape of an article to be worked upon according to the contour of the aperture of said template.

8. A device for working articles by boring, turning and like operations, comprising a head provided with an internal hollow space, a plate having an opening and connected to said head for substatially closing said space, a spring-supporting carrier for a tool seated wtihin said hollow space, said carrier extending through said opening and being provided with guiding means and with a carrier head for supporting said tool, a cup-shaped body on which said first-mentioned head is pivoted, and a support connected to said body for securement of a template on said sup- 6 port, said template being provided with a shaped opening along which said guiding means is guided while said tool is supported by said carrier head.

9. A device for working articles by boring, turning and like operations, comprising a head provided with a bore open at one side, said head having a transverse hole intersecting said bore, a pin inserted in said hole, a two-armed tool carrier supported by said pin, a stationary cupshaped body on which said head is pivoted, said tool carrier being provided with a guiding surface for engaging a template displaceably connected to said cup-shaped body, and a support on said body for holding a ring substantially in contact with said head and for retaining said template, said carrier having an arm projecting beyond said bore and provided with an opening in which a tool may be fastened.

10. A device for working articles by boring, turning and like operations, comprising a head with an internal hollow space, tool carrier means within said hollow space, means within said hollow space for guiding said carrier, and means facilitating displacement of said guiding means relative to said tool carrier means to thereby alter dimensions of the shape of an article to be worked upon according to the contour of an aperture provided in a portion of said guiding means.

ARNOLD RiiEGG.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 473,027 Smith Apr. 9, 1892 628,703 Fletcher July 11, 1899 

